BMP085/en: различия между версиями
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==Temperature and pressure sensors BMP085 and BMP180== | ==Temperature and pressure sensors BMP085 and BMP180== | ||
=== Connection === | === Connection === |
Текущая версия на 10:24, 6 сентября 2022
Temperature and pressure sensors BMP085 and BMP180
Connection
The sensors are connected to the hardware I2C bus ([UEXT1 connector]) to use the Wiren Board Smart Home 3.5 controller. The Pinout of the connector UEXT: http://en.wikipedia.org/wiki/UEXT
Configuring the hardware I2C bus
Find the section with the comment: /* uncomment do not enable hardware with I2C */
/* Uncomment no enable hardware i2c */ /* i2c0: i2c@80058000 { pinctrl-names = "default"; pinctrl-0 = <&i2c0_pins_a>; status = "okay"; }; */
uncomment:
/* Uncomment no enable hardware i2c */ i2c0: i2c@80058000 { pinctrl-names = "default"; pinctrl-0 = <&i2c0_pins_a>; status = "okay"; };
In addition, make sure that the list of pinctrl@80018000 pinctrl-0 does not refer to I2C:
pinctrl@80018000 { pinctrl-names = "default"; pinctrl-0 = <&hog_pins_a &pin_gpio_pu_0_5 &pin_gpio_pu_0_6 &pin_gpio_pu_0_7 &pin_gpio_pu_0_16 >;
Compiled DTS with enabled I2C interface for Wiren Board Smart Home 3.5: http://contactless.ru/wiki/index.php/%D0%A4%D0%B0%D0%B9%D0%BB:Imx23-wirenboard32.dtb
Тranslation into MQTT
apt-get update apt-get install wb-mqtt-bmp085
Source code: https://github.com/contactless/wb-mqtt-bmp085